The builtin logo, or a text file in logo syntax, drawn as an extruded slab:
the front is the art as it is, the back is the art mirrored, and the side
walls are shaded with block glyphs. Rendering is pure: no terminal, no
input, no timer.
`--logo-type spin` hands every frame to the normal logo pipeline, so the
modules are laid out beside it exactly as they are for any other type, and
the first frame without --watch is byte-identical to the same art printed
as a builtin logo.
The rotation is driven by the `--watch` loop: `ffSpinTick()` runs once per
refresh and `ffLogoPrint()` is called only when it reports a step, so the
logo and the modules can never drift apart, and a build that never uses the
type costs one comparison per refresh.
Speed is set either as degrees per frame (--logo-spin-speed-per-frame,
default 10) or as seconds per revolution (--logo-spin-speed-per-round,
read from the clock and winning over the former when both are given). Both
take negative values to turn the other way, and --logo-spin-angle picks the
frame to start from.
--key-language with an empty value (and "language": null in the config)
asks for the system locale, not for a specific language. When that locale
has no translation, fastfetch aborted with exit 477 instead of printing
anything, so the same config broke on every locale outside the twelve
supported ones, and under LC_ALL=C variants such as POSIX.
Auto-detected locales now fall back to English. An explicitly requested
language still errors out, so typos and zh are still reported.
Carter Li